HP Color LaserJet 2840 All-In-One Printer

Error Codes and Support


Sensor error

Error Description:

The device has experienced an internal sensor error (most likely, the top-of-page sensor).


Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the device to initialize. If the error persists, check the top-of-page sensor. See Removing the density sensor and top-of-page sensor. If the error persists, replace the DC controller. See Removing the DC controller.

Call for Assistance 844-755-3000